product description:
★ Easy to installation: No Battery Required for the Receiver. Just plug it into a wall electrical outlet. Transmitter is powered with 12V 23A battery (Pre-install in the Transmitter). Install the Transmitter with 3M double-sided adhesive tape or Screws. Specifications: Battery in Transmitter: 12V 23A Alkaline Battery
Power Consumption of Transmitter<10mW
Operation Range: 1000 feet (Open Space)
Volume Range: 30~110 dB, 4 Levels
Working Temperature: -30℃ to 70℃
Package includes:
2*Transmitter (DC powered & A 12V 23A alkaline battery included)
3* Receivers (AC powered)
2*Double-sided adhesive tape
4*Screw and expansion bolts
1*Mini screwdriver
1*User manual
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